5.4 Legendary Cloaks - Transmoggable or no?

Did a little searching, but I wasn't able to find anything. Do we have any idea whether the legendary cloaks will be transmoggable or not? Not really a fan of them myself, and if they weren't, I'd find that extremely dissapointing.

Was wondering will this effect be there when you get the cape, and i saw the cape is legendary, i thought they were purple first?
Do you first need to do something to make it 'legendary' (orange) and get that effect? Or will this all happen once you get it?